As a tribute band, Abba clones Bjorn Again take their job very seriously.
So seriously, in fact, that the members refuse to reveal their real names and ages, and conduct media interviews as their alter egos.
They take their first names - Frida Longstokin, Agnetha Falstart, Benny Anderwear and Bjorn Volvo-us - after those of the original Abba members and give an irreverent twist to their last names.
Longstokin, whose name is a spin on Swedish children's book character Pippi Longstocking, claims she is "ageless" in a telephone interview from Melbourne.
Like their stage act, she even adopts a fake Swedish accent during the interview, reinforcing the band's reputation for not breaking character in media interviews.
The Australian tribute band will perform at Sands Theatre, MasterCard Theatres at Marina Bay Sands today and tomorrow.
"I never get tired of singing Abba songs. They make me so happy and joyous," says Longstokin, whose role in the group is to channel real-life Abba member Anna-Frid Lyngstad, 67, better known as Frida.
The original band split up more than 30 years ago.
Bjorn Again, the most enduring and successful Abba tribute band, have been keeping songs such as Dancing Queen, Super Trouper and Money, Money, Money alive since 1988, when they first plied the Melbourne pub circuit.
Their first overseas tour was in Sweden, Abba's home country, in 1990. Since then, they have played in more than 80 countries, putting on about four shows in a month.